Katy,
I am an Objects Conservator and my recommendation is that you consult a conservator rather than using a one-size-fits-all approach to cleaning the objects. While what was used may be the same for all objects, removal can be very different depending on the material type of the object. If you do not have access to a conservator for consultation, then I would recommend going to the American Institute for Conservation (AIC) website and using their "Find a Professional" tool. It will help you find an objects or archaeological conservator that can either consult or do the treatments.
As luck would have it, the AIC conference will be in Jacksonville in May of this year at the Hyatt Regency Jacksonville Riverfront. There will be several hundred conservators. You should be able to easily locate an objects or an archaeological conservator who might be willing to visit your museum for a consultation.
If I can be of any further assistance, please do not hesitate to contact me.
Cynthia
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Cynthia Blechl
Objects Conservator
Army Heritage Museum
Carlisle Barracks PA
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